77e55b4d1f
The idle tip rotation walked the catalog as a ring: after the last tip it wrapped to the first, so a user who had already seen every tip kept getting "Start fresh", "Teach it once", ... again every six hours for as long as they used the app. Only the X stopped a tip, and letting a bubble time out (the normal way it leaves) counted for nothing. The walk is now one lap. nextTip also steps over every tip in the seen ledger ($tipShownAt, which already recorded every catalog tip that reached the screen), so a tip shows once however it left, and the rotation runs dry once every tip has had its moment. Settings > Reset clears the seen ledger and the cursor as well as the retired set, and its button counts what a Reset would actually bring back (shown or closed, counted once). Agent tips carry no catalog id and are untouched. Live repro (Playwright against the worktree's Vite renderer, all nine tips seeded as seen, clock fast-forwarded past settle + cooldown): origin/main re-showed "Start fresh"; fixed renderer shows nothing; a fresh user (nothing seen) still gets the first tip.